From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756078Ab3KAWHc (ORCPT ); Fri, 1 Nov 2013 18:07:32 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:55109 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755787Ab3KAWFO (ORCPT ); Fri, 1 Nov 2013 18:05:14 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, James Ralston , Wolfram Sang , Jean Delvare Subject: [PATCH 3.10 45/54] i2c: ismt: initialize DMA buffer Date: Fri, 1 Nov 2013 15:04:13 -0700 Message-Id: <20131101220216.375967005@linuxfoundation.org> X-Mailer: git-send-email 1.8.4.3.gca3854a In-Reply-To: <20131101220211.311926234@linuxfoundation.org> References: <20131101220211.311926234@linuxfoundation.org> User-Agent: quilt/0.60-5.1.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: James Ralston commit bf4169100c909667ede6af67668b3ecce6928343 upstream. This patch adds code to initialize the DMA buffer to compensate for possible hardware data corruption. Signed-off-by: James Ralston [wsa: changed to use 'sizeof'] Signed-off-by: Wolfram Sang Cc: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- drivers/i2c/busses/i2c-ismt.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/i2c/busses/i2c-ismt.c +++ b/drivers/i2c/busses/i2c-ismt.c @@ -393,6 +393,9 @@ static int ismt_access(struct i2c_adapte desc = &priv->hw[priv->head]; + /* Initialize the DMA buffer */ + memset(priv->dma_buffer, 0, sizeof(priv->dma_buffer)); + /* Initialize the descriptor */ memset(desc, 0, sizeof(struct ismt_desc)); desc->tgtaddr_rw = ISMT_DESC_ADDR_RW(addr, read_write);